Apple (NASDAQ:AAPL) has seen some ex-employees take shots at it lately. Former sales exec David Sabotta criticized Tim Cook's people skills, hiring acumen, and passion for technology. Former engineer Dan Crow argued the same top-down business structure that allowed Steve Jobs to build an empire is now a liability, since no one can fill Jobs' shoes. And last month, Steve Wozniak called Apple "arrogant" for refusing to make a larger iPhone. "Not all people want the same thing. A lot of people want the big screens."